This must be the most pathetic episodes of the series if not of TV series altogether. A person stumbles over a body lying in a pool of blood and "freezes". Other doctors/surgeons see the shooter roaming through corridors without at first being seen, being in danger themselves, but none of them has the idea of calling 911 to report where the shooter is. I hope this kind of characters live only in the fantasy of the writers. Then one police officer says "we will handle this", but through the entire episode you don't see a single police officer in the entire hospital. Great handling. Again, I hope this has no parallel in the real world.